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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "remoting/host/event_executor.h"
#include <ApplicationServices/ApplicationServices.h>
#include <Carbon/Carbon.h>
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/compiler_specific.h"
#include "base/location.h"
#include "base/mac/scoped_cftyperef.h"
#include "base/single_thread_task_runner.h"
#include "remoting/host/clipboard.h"
#include "remoting/proto/internal.pb.h"
#include "remoting/protocol/message_decoder.h"
#include "third_party/skia/include/core/SkPoint.h"
namespace remoting {
namespace {
using protocol::ClipboardEvent;
using protocol::KeyEvent;
using protocol::MouseEvent;
// USB to Mac keycode mapping table.
#define USB_KEYMAP(usb, xkb, win, mac) {usb, mac}
#include "ui/base/keycodes/usb_keycode_map.h"
#undef USB_KEYMAP
// A class to generate events on Mac.
class EventExecutorMac : public EventExecutor {
public:
EventExecutorMac(scoped_refptr<base::SingleThreadTaskRunner> task_runner);
virtual ~EventExecutorMac() {}
// ClipboardStub interface.
virtual void InjectClipboardEvent(const ClipboardEvent& event) OVERRIDE;
// InputStub interface.
virtual void InjectKeyEvent(const KeyEvent& event) OVERRIDE;
virtual void InjectMouseEvent(const MouseEvent& event) OVERRIDE;
// EventExecutor interface.
virtual void OnSessionStarted(
scoped_ptr<protocol::ClipboardStub> client_clipboard) OVERRIDE;
virtual void OnSessionFinished() OVERRIDE;
private:
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
SkIPoint mouse_pos_;
uint32 mouse_button_state_;
scoped_ptr<Clipboard> clipboard_;
DISALLOW_COPY_AND_ASSIGN(EventExecutorMac);
};
EventExecutorMac::EventExecutorMac(
scoped_refptr<base::SingleThreadTaskRunner> task_runner)
: task_runner_(task_runner),
mouse_button_state_(0),
clipboard_(Clipboard::Create()) {
// Ensure that local hardware events are not suppressed after injecting
// input events. This allows LocalInputMonitor to detect if the local mouse
// is being moved whilst a remote user is connected.
// This API is deprecated, but it is needed when using the deprecated
// injection APIs.
// If the non-deprecated injection APIs were used instead, the equivalent of
// this line would not be needed, as OS X defaults to _not_ suppressing local
// inputs in that case.
CGSetLocalEventsSuppressionInterval(0.0);
}
// Hard-coded mapping from Virtual Key codes to Mac KeySyms.
// This mapping is only valid if both client and host are using a
// US English keyboard layout.
// Because we're passing VK codes on the wire, with no Scancode,
// "extended" flag, etc, things like distinguishing left & right
// Shift keys doesn't work.
//
// TODO(wez): Replace this with something more closely tied to what
// WebInputEventFactory does on Linux/GTK, and which respects the
// host's keyboard layout.
//
// TODO(garykac): Remove this table once we switch to using USB
// keycodes.
const int kUsVkeyToKeysym[256] = {
// 0x00 - 0x07
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x04 - 0x07
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x08 - 0x0B
kVK_Delete, kVK_Tab, kInvalidKeycode, kInvalidKeycode,
// 0x0C - 0x0F
kInvalidKeycode, kVK_Return, kInvalidKeycode, kInvalidKeycode,
// 0x10 - 0x13
kVK_Shift, kVK_Control, kVK_Option, kInvalidKeycode,
// 0x14 - 0x17
kVK_CapsLock, kVK_JIS_Kana, /* VKEY_HANGUL */ kInvalidKeycode,
/* VKEY_JUNJA */ kInvalidKeycode,
// 0x18 - 0x1B
/* VKEY_FINAL */ kInvalidKeycode, /* VKEY_Kanji */ kInvalidKeycode,
kInvalidKeycode, kVK_Escape,
// 0x1C - 0x1F
/* VKEY_CONVERT */ kInvalidKeycode, /* VKEY_NONCONVERT */ kInvalidKeycode,
/* VKEY_ACCEPT */ kInvalidKeycode, /* VKEY_MODECHANGE */ kInvalidKeycode,
// 0x20 - 0x23
kVK_Space, kVK_PageUp, kVK_PageDown, kVK_End,
// 0x24 - 0x27
kVK_Home, kVK_LeftArrow, kVK_UpArrow, kVK_RightArrow,
// 0x28 - 0x2B
kVK_DownArrow, /* VKEY_SELECT */ kInvalidKeycode,
/* VKEY_PRINT */ kInvalidKeycode, /* VKEY_EXECUTE */ kInvalidKeycode,
// 0x2C - 0x2F
/* VKEY_SNAPSHOT */ kInvalidKeycode, /* XK_INSERT */ kInvalidKeycode,
kVK_ForwardDelete, kVK_Help,
// 0x30 - 0x33
kVK_ANSI_0, kVK_ANSI_1, kVK_ANSI_2, kVK_ANSI_3,
// 0x34 - 0x37
kVK_ANSI_4, kVK_ANSI_5, kVK_ANSI_6, kVK_ANSI_7,
// 0x38 - 0x3B
kVK_ANSI_8, kVK_ANSI_9, kInvalidKeycode, kInvalidKeycode,
// 0x3C - 0x3F
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x40 - 0x43
kInvalidKeycode, kVK_ANSI_A, kVK_ANSI_B, kVK_ANSI_C,
// 0x44 - 0x47
kVK_ANSI_D, kVK_ANSI_E, kVK_ANSI_F, kVK_ANSI_G,
// 0x48 - 0x4B
kVK_ANSI_H, kVK_ANSI_I, kVK_ANSI_J, kVK_ANSI_K,
// 0x4C - 0x4F
kVK_ANSI_L, kVK_ANSI_M, kVK_ANSI_N, kVK_ANSI_O,
// 0x50 - 0x53
kVK_ANSI_P, kVK_ANSI_Q, kVK_ANSI_R, kVK_ANSI_S,
// 0x54 - 0x57
kVK_ANSI_T, kVK_ANSI_U, kVK_ANSI_V, kVK_ANSI_W,
// 0x58 - 0x5B
kVK_ANSI_X, kVK_ANSI_Y, kVK_ANSI_Z, kVK_Command,
// 0x5C - 0x5F
kVK_Command, kVK_Command, kInvalidKeycode, /* VKEY_SLEEP */ kInvalidKeycode,
// 0x60 - 0x63
kVK_ANSI_Keypad0, kVK_ANSI_Keypad1, kVK_ANSI_Keypad2, kVK_ANSI_Keypad3,
// 0x64 - 0x67
kVK_ANSI_Keypad4, kVK_ANSI_Keypad5, kVK_ANSI_Keypad6, kVK_ANSI_Keypad7,
// 0x68 - 0x6B
kVK_ANSI_Keypad8, kVK_ANSI_Keypad9, kVK_ANSI_KeypadMultiply,
kVK_ANSI_KeypadPlus,
// 0x6C - 0x6F
/* VKEY_SEPARATOR */ kInvalidKeycode, kVK_ANSI_KeypadMinus,
kVK_ANSI_KeypadDecimal, kVK_ANSI_KeypadDivide,
// 0x70 - 0x73
kVK_F1, kVK_F2, kVK_F3, kVK_F4,
// 0x74 - 0x77
kVK_F5, kVK_F6, kVK_F7, kVK_F8,
// 0x78 - 0x7B
kVK_F9, kVK_F10, kVK_F11, kVK_F12,
// 0x7C - 0x7F
kVK_F13, kVK_F14, kVK_F15, kVK_F16,
// 0x80 - 0x83
kVK_F17, kVK_F18, kVK_F19, kVK_F20,
// 0x84 - 0x87
/* VKEY_F21 */ kInvalidKeycode, /* VKEY_F22 */ kInvalidKeycode,
/* VKEY_F23 */ kInvalidKeycode, /* XKEY_F24 */ kInvalidKeycode,
// 0x88 - 0x8B
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x8C - 0x8F
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x90 - 0x93
/* VKEY_NUMLOCK */ kInvalidKeycode, /* VKEY_SCROLL */ kInvalidKeycode,
kInvalidKeycode, kInvalidKeycode,
// 0x94 - 0x97
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x98 - 0x9B
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0x9C - 0x9F
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xA0 - 0xA3
kVK_Shift, kVK_RightShift, kVK_Control, kVK_RightControl,
// 0xA4 - 0xA7
kVK_Option, kVK_RightOption,
/* XF86kVK_Back */ kInvalidKeycode, /* XF86kVK_Forward */ kInvalidKeycode,
// 0xA8 - 0xAB
/* XF86kVK_Refresh */ kInvalidKeycode, /* XF86kVK_Stop */ kInvalidKeycode,
/* XF86kVK_Search */ kInvalidKeycode,
/* XF86kVK_Favorites */ kInvalidKeycode,
// 0xAC - 0xAF
/* XF86kVK_HomePage */ kInvalidKeycode, kVK_Mute, kVK_VolumeDown,
kVK_VolumeUp,
// 0xB0 - 0xB3
/* XF86kVK_AudioNext */ kInvalidKeycode,
/* XF86kVK_AudioPrev */ kInvalidKeycode,
/* XF86kVK_AudioStop */ kInvalidKeycode,
/* XF86kVK_AudioPause */ kInvalidKeycode,
// 0xB4 - 0xB7
/* XF86kVK_Mail */ kInvalidKeycode, /* XF86kVK_AudioMedia */ kInvalidKeycode,
/* XF86kVK_Launch0 */ kInvalidKeycode, /* XF86kVK_Launch1 */ kInvalidKeycode,
// 0xB8 - 0xBB
kInvalidKeycode, kInvalidKeycode, kVK_ANSI_Semicolon, kVK_ANSI_Equal,
// 0xBC - 0xBF
kVK_ANSI_Comma, kVK_ANSI_Minus, kVK_ANSI_Period, kVK_ANSI_Slash,
// 0xC0 - 0xC3
kVK_ANSI_Grave, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xC4 - 0xC7
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xC8 - 0xCB
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xCC - 0xCF
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xD0 - 0xD3
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xD4 - 0xD7
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xD8 - 0xDB
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kVK_ANSI_LeftBracket,
// 0xDC - 0xDF
kVK_ANSI_Backslash, kVK_ANSI_RightBracket, kVK_ANSI_Quote,
/* VKEY_OEM_8 */ kInvalidKeycode,
// 0xE0 - 0xE3
kInvalidKeycode, kInvalidKeycode, /* VKEY_OEM_102 */ kInvalidKeycode,
kInvalidKeycode,
// 0xE4 - 0xE7
kInvalidKeycode, /* VKEY_PROCESSKEY */ kInvalidKeycode, kInvalidKeycode,
/* VKEY_PACKET */ kInvalidKeycode,
// 0xE8 - 0xEB
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xEC - 0xEF
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xF0 - 0xF3
kInvalidKeycode, kInvalidKeycode, kInvalidKeycode, kInvalidKeycode,
// 0xF4 - 0xF7
kInvalidKeycode, kInvalidKeycode, /* VKEY_ATTN */ kInvalidKeycode,
/* VKEY_CRSEL */ kInvalidKeycode,
// 0xF8 - 0xFB
/* VKEY_EXSEL */ kInvalidKeycode, /* VKEY_EREOF */ kInvalidKeycode,
/* VKEY_PLAY */ kInvalidKeycode, /* VKEY_ZOOM */ kInvalidKeycode,
// 0xFC - 0xFF
/* VKEY_NONAME */ kInvalidKeycode, /* VKEY_PA1 */ kInvalidKeycode,
/* VKEY_OEM_CLEAR */ kInvalidKeycode, kInvalidKeycode
};
void EventExecutorMac::InjectClipboardEvent(const ClipboardEvent& event) {
if (!task_runner_->BelongsToCurrentThread()) {
task_runner_->PostTask(
FROM_HERE,
base::Bind(&EventExecutorMac::InjectClipboardEvent,
base::Unretained(this),
event));
return;
}
clipboard_->InjectClipboardEvent(event);
}
void EventExecutorMac::InjectKeyEvent(const KeyEvent& event) {
// HostEventDispatcher should filter events missing the pressed field.
DCHECK(event.has_pressed());
int keycode = kInvalidKeycode;
if (event.has_usb_keycode()) {
keycode = UsbKeycodeToNativeKeycode(event.usb_keycode());
VLOG(3) << "Converting USB keycode: " << std::hex << event.usb_keycode()
<< " to keycode: " << keycode << std::dec;
} else if (event.has_keycode()) {
int win_keycode = event.keycode();
if (win_keycode >= 0 && win_keycode < 256) {
keycode = kUsVkeyToKeysym[win_keycode];
}
VLOG(3) << "Converting VKEY: " << std::hex << event.keycode()
<< " to keycode: " << keycode << std::dec;
}
// If we couldn't determine the Mac virtual key code then ignore the event.
if (keycode == kInvalidKeycode)
return;
// We use the deprecated event injection API because the new one doesn't
// work with switched-out sessions (curtain mode).
CGError error = CGPostKeyboardEvent(0, keycode, event.pressed());
if (error != kCGErrorSuccess) {
LOG(WARNING) << "CGPostKeyboardEvent error " << error;
}
}
void EventExecutorMac::InjectMouseEvent(const MouseEvent& event) {
if (event.has_x() && event.has_y()) {
// TODO(wez): This code assumes that MouseEvent(0,0) (top-left of client view)
// corresponds to local (0,0) (top-left of primary monitor). That won't in
// general be true on multi-monitor systems, though.
VLOG(3) << "Moving mouse to " << event.x() << "," << event.y();
mouse_pos_ = SkIPoint::Make(event.x(), event.y());
}
if (event.has_button() && event.has_button_down()) {
if (event.button() >= 1 && event.button() <= 3) {
VLOG(2) << "Button " << event.button()
<< (event.button_down() ? " down" : " up");
int button_change = 1 << (event.button() - 1);
if (event.button_down())
mouse_button_state_ |= button_change;
else
mouse_button_state_ &= ~button_change;
} else {
VLOG(1) << "Unknown mouse button: " << event.button();
}
}
// We use the deprecated CGPostMouseEvent API because we receive low-level
// mouse events, whereas CGEventCreateMouseEvent is for injecting higher-level
// events. For example, the deprecated APIs will detect double-clicks or drags
// in a way that is consistent with how they would be generated using a local
// mouse, whereas the new APIs expect us to inject these higher-level events
// directly.
CGPoint position = CGPointMake(mouse_pos_.x(), mouse_pos_.y());
enum {
LeftBit = 1 << (MouseEvent::BUTTON_LEFT - 1),
MiddleBit = 1 << (MouseEvent::BUTTON_MIDDLE - 1),
RightBit = 1 << (MouseEvent::BUTTON_RIGHT - 1)
};
CGError error = CGPostMouseEvent(position, true, 3,
(mouse_button_state_ & LeftBit) != 0,
(mouse_button_state_ & RightBit) != 0,
(mouse_button_state_ & MiddleBit) != 0);
if (error != kCGErrorSuccess) {
LOG(WARNING) << "CGPostMouseEvent error " << error;
}
if (event.has_wheel_offset_x() && event.has_wheel_offset_y()) {
int dx = event.wheel_offset_x();
int dy = event.wheel_offset_y();
// Note that |dy| (the vertical wheel) is the primary wheel.
error = CGPostScrollWheelEvent(2, dy, dx);
if (error != kCGErrorSuccess) {
LOG(WARNING) << "CGPostScrollWheelEvent error " << error;
}
}
}
void EventExecutorMac::OnSessionStarted(
scoped_ptr<protocol::ClipboardStub> client_clipboard) {
if (!task_runner_->BelongsToCurrentThread()) {
task_runner_->PostTask(
FROM_HERE,
base::Bind(&EventExecutorMac::OnSessionStarted,
base::Unretained(this),
base::Passed(&client_clipboard)));
return;
}
clipboard_->Start(client_clipboard.Pass());
}
void EventExecutorMac::OnSessionFinished() {
if (!task_runner_->BelongsToCurrentThread()) {
task_runner_->PostTask(
FROM_HERE,
base::Bind(&EventExecutorMac::OnSessionFinished,
base::Unretained(this)));
return;
}
clipboard_->Stop();
}
} // namespace
scoped_ptr<EventExecutor> EventExecutor::Create(
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner,
Capturer* capturer) {
return scoped_ptr<EventExecutor>(new EventExecutorMac(main_task_runner));
}
} // namespace remoting
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